Solaris DDI specific (Solaris DDI).
cb_ops contains all entry points for drivers that support both character and block entry points. All leaf device drivers supporting direct user process access to a device should declare a cb_ops structure.
All drivers which safely allow multiple threads of execution in the driver at the same time must set the D_MP flag in the cb_flag field.
If the driver properly handles 64-bit offsets, it should also set the D_64BIT flag in the cb_flag field. This specifies that the driver will use the uio_loffset field of the uio.9s structure.
mt-streams.9f describes other flags that may be set in the cb_flag field.
cb_rev is the cb_ops structure revision number. This field must be set to CB_REV.
Non-STREAMS drivers should set cb_str to NULL.
The following DDI/DKI or DKI-only or DDI-only functions are provided in the character/block driver operations structure.
block/char Function Description b/c XXopen DDI/DKI b/c XXclose DDI/DKI b XXstrategy DDI/DKI b XXprint DDI/DKI b XXdump DDI(Sun) c XXread DDI/DKI c XXwrite DDI/DKI c XXioctl DDI/DKI c XXdevmap DDI(Sun) c XXmmap DKI c XXsegmap DKI c XXchpoll DDI/DKI c XXprop_op DDI(Sun) c XXaread DDI(Sun) c XXawrite DDI(Sun)
int (*cb_open)(dev_t *devp, int flag, int otyp, cred_t *credp); int (*cb_close)(dev_t dev, int flag, int otyp, cred_t *credp); int (*cb_strategy)(struct buf *bp); int (*cb_print)(dev_t dev, char *str); int (*cb_dump)(dev_t dev, caddr_t addr, daddr_t blkno, int nblk); int (*cb_read)(dev_t dev, struct uio *uiop, cred_t *credp); int (*cb_write)(dev_t dev, struct uio *uiop, cred_t *credp); int (*cb_ioctl)(dev_t dev, int cmd, int arg, int mode, cred_t *credp, int *rvalp); int (*cb_devmap)(); int (*cb_mmap)(dev_t dev, off_t off, int prot); int (*cb_segmap)(dev_t dev, off_t off, struct as *asp, caddr_t *addrp, off_t len, unsigned int prot, unsigned int maxprot, unsigned int flags, cred_t *credp); int (*cb_chpoll)(dev_t dev, short events, int anyyet, short *reventsp, struct pollhead **phpp); int (*cb_prop_op)(dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op, int mod_flags, char *name, caddr_t valuep, int *length);struct streamtab *cb_str; /* streams information */
int cb_flag; int cb_rev; int (*cb_aread)(dev_t dev, struct aio_req *aio, cred_t *credp); int (*cb_awrite)(dev_t dev, struct aio_req *aio, cred_t *credp);
The devmap entry point is not defined in this release and should be set to nodev.
Created by unroff & hp-tools. © by Hans-Peter Bischof. All Rights Reserved (1997).
Last modified 21/April/97